Tractor



L. B. HARVEY.

TRACTOR.

APPLICATION FILED AUG-L 19184 Patented Aug. l2, 1919.

L Q L .Lau

- BY w N) ATTORNEY.

{ f QFFIGE.

Loi-ns B. Harvey, or srocxromcamromxm.

i Tapa "'w'kigm t- 'concernators`;' and: I- do declare-' the following to be aclear,full,fandexactf description of the.

same',- reference lieingfhad-to -the`accompanyingdrawings, andto :the 'characters'of refer#A ence marked: thereon; whicli form'. apartof tlisiappli'cationi-f v.

. rllhis inventionrelates'- tractors fand' parf ticiilarlyfjtoitlie' wheelidriifeitype; ,the principal object ofthe invention' being'. to produce a: tractor.' inf -whicli` the' driving." power' `and perpendculrr center lineaofthe wheels andA be: thrown;frv'ira'rd- -tli'ereoifand will thus.'A

engine 14 or similar power plant .-is' mounted on the frame 107 and connected exerti af direct-downward? pressurej ahead of suchcenter'insteadfoftailioriontal pressure.

This' will2 be foundf particularly advanta- ,ire/ous` whenl pulling* af'li'eav-y load: or wlien'4 the tractor .is' -x`nired as'tli'e' weight' and drining powefl are' their automatically thrown' forwardfoftli'e-center or'lo'west--point of the wheelsandcamexert' agreater leverage to turnthe" wheelsl and' raise the. tractor from itsmir'ed position; Hence a miieli lighter and lesspower-full machineA` maybe con- '.'sti'uctedltbsaocomplish' the same results now' -obtaiiiedbyi the use:-of.=.lieavy,' powerful tracftorss- Y A' further object ofE the'invention-is to-protion and'A construction, and? yet one which willbeextremelyeliicienti for the purposes for whichit' is designed:A

These' object's,' I accomplish by means of such structure and relative-arrangement of Figure l' is a side elevationof the' complete' tractor.-

Fig.2lis a'sectiontakcn-onf a-,]ine 24-2 of l f mueren.

j. Spemcmnofnme'n rami. Patenfeuaug. 12', 1919. Application sied Au'gu'st 15y isis. sriai No. 249,984.

fora` purpose as will appear, Tiirnable on these axles are Wheels 4, haring solid outer faces 5 in place ol spokes. Each wheel has an annular gear 6 therein, and a smooth run- 'way.7. .Meshing with gears-6 are pinions 8 securedto shafts 9 tiirnahly mounted on the undersideof a frame 10. Rollers l1 on the shafts v9 rideoii the runway '7 and prevent Athe teetliof the gears 6 and 8- from meshing axles and the shafts 9. A steering wheel 13 i's'mountedo'n the frames 1 ahead of the wheels, or ltli'e machine may be steered by interposing suitable clutches, etc.; in tlie'sliaft 9,wherehy one of the gears S may lie held stationary or reversed while the other is turning forward.

in driving relation to the shaft 9 by any suitable means (not shown).

will appear. The inner fares of the wheels 4; are provided with disks lli mounted on the keep dirt. froingrettimer in the gcar'teetli.

The operation is as follows?Supposing theV tractor to be pullingY a light load over a good road', the drivingr gears 8 remain in meshvwitli the gears l in the position shown in Fig. 1. It, however, a hill is climbed or the tractor strikes a rough and muddy road, the gears 8 start to climb on the gears 6, much in the same manner :is the squirrel in its treadmill. This action throws the main weight and driving power of the tractor forward of the centr-x' of thel wheels, and a greater turning or rolling cll'ort. is obtained-to ride tlie'ti'aiftor out. ot' a mudhole orpull aheavier load. Should the gears continue to climb, thi-y are permitted to do sofimtil the point of maximum elliciency is'i'eaclu-d, which is al; the horizontal fcentc'i' linel of the wheels, when tlu'. frame 'l0 nnpinges against, oniI ol` the axles 2. al'.

the lient portion 2l thereof, and against the projections 15 on the frames l. 'lhis Xgives an additional leverage to the drivin;r power of the machine to tui-n the wheels. By thus throwingr the main wright 'of the machine forward of the wheel centers, the tendency of a niachine to niire still tur- -`.The frames l are provided at suitable l 'points with projections 15 for a purpose as 'shafts 9 and turnable therewith in order to ther in the mud, owing to its weight being central of the wheels, is eliminated.

Thus, from the foregoing description it will readily lbe seen that I have produced such a device as substantially fulfils the objects of the invention as set forth herein.

While this specification sets forth in detain the present and preferred construction of the device, still in practice, suoli deviations from such details muy be resorted t0 as do not form a departure from the spirit of the invention, as defined by the appended claims. v

Having thus described my invention, what I claim as new and useful and desire to secure b v Letters Patent is z- 1. A wheel ti'nctoicun'iprising a. frame, axles seeured to the frame, wheels turnable on the axles, annular gears in the Wheels, driving pinions meshing with the gears, shafts on the gears turnably mounted on an inner frame, and radius rods pivotally connecting said axles :md said shafts wherebr the inner frame is free to turn about the axles as a. center.

2. A wheel tractorcomprising a frame, axles secured to the frame, wheels turnable on the axles, annular gears in the Wheels, driving pinions meshing with the gears, shafts on the gears turnably mounted'on an inner frame, radiusrods pivotally Connecting said axles and said shafts whereby the inner frame is .free to turn about the axles' as a center, and projections on the first named frame adapted to impinge against the inner frame when the pinions have swung on the radius ro'ds and hve climbed around the Wheels to the point of Ina-Xinnnn power-exerting efficiency thereon.

In testimony whereof I afiix my signature 4.0

in presence of two witnesses.

LOUIS B. HARVEY.

Witnesses VERADINE vVAnNER, BERNARD PRIVAT. 

